Statewide, rain totals ranged from .11 inches in Hamilton, Mercer County to 6.64 inches in Clark and 6.24 inches in Westfield.

A flash flood warning was in effect in New York City until 9:45 p.m., and New Jersey Gov. Phil Murphy declared a state of emergency. Middlesex, Morris and Somerset counties remained under a flood warning until 7:15 a.m. Tuesday.

Just one day after a fast-moving storm swept through New Jersey, causing dramatic rescues, a home explosion, and multiple deaths, officials have issued both a Flood Watch and Heat Advisory for the region.

Forecasters say some thunderstorm cells have the potential to dump as much as 2 to 3 inches of rain in one hour, posing a risk of rapid flooding.

Flooding caused delays on multiple New York City subway lines Monday as torrential rain pummeled the Tri-State Area.

Hunterdon County has been awarded an $880,200 grant from the Federal Emergency Management Agency (FEMA) to implement Phase II of its Hazard Mitigation Flood Warning System.

"Flooding can be deadly and often strikes with little or no warning. Streets, basements, and below-grade spaces can fill with water in minutes. If you live in a basement apartment or low-lying area, be ready to move to higher ground,

A tornado warning is in effect until 9:15 p.m. in New Castle County, Delaware.